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Classify each of the following as being...

Classify each of the following as being either a p-type of a n-type semiconductor:
(i) Ge doped with In (ii) Si doped with B.

Text Solution

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(i) Ge is Group 14 element and In is Group 13 element. Hence, an electron deficit hole is created and therefore, it is p-type
(ii) B is Group 13 element and Si is Group 14 element. there will be a free electron. Hence, it is n- type.
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Knowledge Check

  • Classify each of the following as being either a p-type or an n-type semiconductor a. Ge doped with In b. B doped with Si

    A
    group 14 elements
    B
    group 15 elements
    C
    group 13 elements
    D
    group 18 elements

  • In a P -type semiconductor, germanium is doped with

    A
    p-type semiconductor Ge Ge Ge Ge
    B
    C
    No change in conductivity Ge Ge Ge Ge
    D
    It becomes superconductor Ge Ge Ge Ge

  • p-type semi-conductors are formed when Si or Ge are doped with:

    A
    Group 14 elements
    B
    Group 15 elements
    C
    Group 13 elements
    D
    Group 18 elements

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